AN EXOCELLULAR MANNAN, ALTERNATELY LINKED 1,3-β AND 1,4-β FROM RHODOTORULA GLUTINIS

Abstract

The yeast, Rhodotorula glutinis, gives an exocellular mannan containing 1,3-β- and 1.4-β-D-mannopyranose residues arranged in a straight chain of at least 90 units. Consecutive 1,3-β links are absent and although consecutive 1,4-β links may exist they are present at most in only a very small proportion. The 1,3-β- and 1,4-β-D-mannopyranose residues are therefore arranged alternately in the chain.Mannans from R. mucilaginosa, R. minuta, and an unidentified Rhodotorula spp. 62-506 appear to have similar structures.